Deleting part of containerized constraints makes whole constraint unprintable about jump.jl

[odow]

MWE:

julia> using JuMP

julia> model = Model() ;

julia> @variable(model, x);

julia> @constraint(model, c[i=1:2], x <= i);

julia> delete(model, c[1])

julia> c
2-element Vector{ConstraintRef{Model, MathOptInterface.ConstraintIndex{MathOptInterface.ScalarAffineFunction{Float64}, MathOptInterface.LessThan{Float64}}, ScalarShape}}:
Error showing value of type Vector{ConstraintRef{Model, MathOptInterface.ConstraintIndex{MathOptInterface.ScalarAffineFunction{Float64}, MathOptInterface.LessThan{Float64}}, ScalarShape}}:
ERROR: The index MathOptInterface.ConstraintIndex{MathOptInterface.ScalarAffineFunction{Float64}, MathOptInterface.LessThan{Float64}}(1) is invalid. Note that an index becomes invalid after it has been deleted.
Stacktrace:
  [1] throw_if_not_valid

@LebedevRI I will commend you. You somehow keep finding the rough edges of JuMP!

[LebedevRI]

@odow thank you!

@LebedevRI I will commend you. You somehow keep finding the rough edges of JuMP!

Thank you, i guess? It's a bit of a curse :[ I would very much prefer to
never encounter bugs anywhere instead, but the exact opposite happens in practice...